S-90269A548 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing applications.
• Precision fit and alignment ensured by the 25mm shoulder with controlled diameter tolerance, reducing wear and simplifying assembly.
• Secure and efficient fastening with a 3mm hex socket drive, providing high torque transmission and a flush, low-profile head.
• Consistent and reliable threading with Class 5g6g thread fit on the M4 x 0.7mm coarse thread, ensuring predictable engagement and vibration resistance.
• Compliance with stringent regulations including RoHS 3 and REACH, making it safe for various industrial and international markets.
• Durable and long-lasting performance backed by a Rockwell B79 hardness, resisting deformation under stress.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assemblies, such as providing a fixed pivot point or acting as a shaft for rotating components like gears and pulleys. The 316 stainless steel material offers exceptional resistance to chemicals, saltwater, and industrial atmospheres, preventing failure in corrosive settings. The 25mm shoulder length with its precise diameter tolerance ensures accurate component positioning, eliminating misalignment and reducing stress concentrations. Combined with the hex socket head and Class 5g6g metric thread, it delivers easy installation in tight spaces and reliable performance in high-vibration environments like machinery, automotive systems, and electronic enclosures, enhancing overall assembly integrity and maintenance efficiency.

Specification Summary & Compliance

The screw features an M4 x 0.7mm coarse thread with a Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, supporting precise engineering requirements. It is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and global industrial applications.